1 Explain that a population pyramid shows the age and sex structure of a population. 2  Point to the horizontal bars, which show the percentage (or the absolute number) of males and females in each age group. 3  Have students interpret the chart.
1 Although they range from $150-$400 or more, a large capacity (25-70 pints) dehumidifier for a basement (the dampest portion of most homes) or other large area averages $200-$300.
Dehumidifier Energy Costs. The initial costs of buying a dehumidifier are obvious, you can get a great machine for just under Â£120 (check out the current sale savings here). So I think itâs best to concentrate on the electricity costs. First of all, the cost of electricity currently is roughly 15 pence per kWh.n a UK house the humidity is unlikely to ever hit 100%, so for this calculation weâll assume 75%. This house would hold an extra 5.4kg of water in the air at 75% rather than the 45% ideal.